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package edu.rice.cs.drjava.model.repl;

import java.io.File;

/** A dummy InteractionsListener that does nothing.
 *  @version $Id: InteractionsListener.java 3808 2006-04-19 19:28:49Z jon-lugo $
 */
public class DummyInteractionsListener implements InteractionsListener {
  
  /** Called after an interaction is started by the GlobalModel.  */
  public void interactionStarted() { }

  /** Called when an interaction has finished running. */
  public void interactionEnded() { }
  
  /** Called when the interactions window generates a syntax error.
   * @param offset the error's offset into the InteractionsDocument
   * @param length the length of the error
   */
  public void interactionErrorOccurred(int offset, int length) { }

  /** Called when the interactionsJVM has begun resetting. */
  public void interpreterResetting() { }
  
  /** Called when the interactions window is reset. */
  public void interpreterReady(File wd) { }

  /** Called when the interactions JVM was closed by System.exit
   * or by being aborted. Immediately after this the interactions
   * will be reset.
   * @param status the exit code
   */
  public void interpreterExited(int status) { }
  
  /** Called if the interpreter reset failed. (Subclasses must maintain listeners.) */
  public void interpreterResetFailed(Throwable t) { }
  
  /** Called when the active interpreter is changed.
   * @param inProgress Whether the new interpreter is currently processing an interaction (i.e. whether an 
   * interactionEnded event will be fired)
   */
  public void interpreterChanged(boolean inProgress) { }

  /** Called when enter was typed in the interactions pane but the interaction was incomplete. */
  public void interactionIncomplete() { }
  
}

